Github user MLnick commented on a diff in the pull request: https://github.com/apache/spark/pull/15593#discussion_r86420744 --- Diff: mllib/src/main/scala/org/apache/spark/ml/classification/LogisticRegression.scala --- @@ -489,13 +485,14 @@ class LogisticRegression @Since("1.2.0") ( val initialCoefWithInterceptArray = initialCoefficientsWithIntercept.toArray val providedCoef = optInitialModel.get.coefficientMatrix providedCoef.foreachActive { (row, col, value) => - val flatIndex = row * numFeaturesPlusIntercept + col + // convert matrix to column major for training --- End diff -- Is this code path ever tested? Since the current `initialModel` is just a sort of dummy placeholder, always `None`?
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